STIR Crust Mix, sugar and margarine in 9-inch pie plate until crumbs are evenly moistened; press against side of pie plate, using measuring cup or large spoon. Then, press remaining crumb mixture onto bottom of pie plate.
BEAT milk and Filling Mix in large bowl with mixer on low speed 1 min. Add COOL WHIP; stir with whisk until blended. Spoon over crust.
REFRIGERATE 1 hour or until firm.